10 grade science
The elevation of the end of the steel beam supported by a concrete floor is adjusted
by means of the steel
wedges E and F. The base plate CD has been welded to the lower flange of beam, and
the end reaction of
the beam is known to be 150 kN. The coefficient of static friction is 0.30 between t
he two steel surfaces and
0.60 between the steel and the concrete. If the horizontal motion of the beam is pre
vented by the force Q,
determine (a) the force P required to raise the beam, (b) the corresponding force Q.
?
The elevation of the end of the steel beam supported by a concrete floor is adjusted
by means of the steel
wedges E and F. The base plate CD has been welded to the lower flange of beam, and
the end reaction of
the beam is known to be 150 kN. The coefficient of static friction is 0.30 between t
he two steel surfaces and
0.60 between the steel and the concrete. If the horizontal motion of the beam is pre
vented by the force Q,
determine (a) the force P required to raise the beam, (b) the corresponding force Q.
?
